Question

当我在Google Data API客户端库的JAVA包中运行示例CalendarFeedDemo时，我遇到了这样的异常

java -classpath "classes:lib/*" CalendarFeedDemo myaddr@gmail.com mypassed
http://www.google.com/calendar/feeds/myaddr@gmail.com
com.google.gdata.util.AuthenticationException: Error connecting with login URI
    at com.google.gdata.client.GoogleAuthTokenFactory.getAuthToken(GoogleAuthTokenFactory.java:489)
    at com.google.gdata.client.GoogleAuthTokenFactory.setUserCredentials(GoogleAuthTokenFactory.java:346)
    at com.google.gdata.client.GoogleService.setUserCredentials(GoogleService.java:362)
    at com.google.gdata.client.GoogleService.setUserCredentials(GoogleService.java:317)
    at CalendarFeedDemo.main(CalendarFeedDemo.java:261)
Caused by: java.net.SocketException: Network is unreachable
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
    at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
    at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
    at java.net.Socket.connect(Socket.java:525)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:550)
    at com.sun.net.ssl.internal.ssl.BaseSSLSocketImpl.connect(BaseSSLSocketImpl.java:141)
    at sun.net.NetworkClient.doConnect(NetworkClient.java:163)
    at sun.net.www.http.HttpClient.openServer(HttpClient.java:394)
    at sun.net.www.http.HttpClient.openServer(HttpClient.java:529)
    at sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:272)
    at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:329)
    at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:172)
    at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:801)
    at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:158)
    at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:904)
    at sun.net.www.protocol.https.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:230)
    at com.google.gdata.client.GoogleAuthTokenFactory.makePostRequest(GoogleAuthTokenFactory.java:547)
    at com.google.gdata.client.GoogleAuthTokenFactory.getAuthToken(GoogleAuthTokenFactory.java:487)
    ... 4 more

我无法理解为什么会有这样的例外。请帮帮我。

Answer 1

从Network is unreachable开始，我会说连接错误：Google无法访问（这种情况不太可能），或者您的互联网连接出现问题。

Answer 2

如果你在代理服务器后面，你需要像这样告诉java：

java -DproxyHost=<proxy host> -DproxyPort=<proxy port> -classpath %cPath% com.googlecode.syncnotes2google.SyncNotes2Google

我在使用syncnotes2google应用程序时必须使用此功能。

在运行Google Data的示例时，获取“与登录URI连接时出错”的例外情况

2 个答案: